Newsletter service Ghost says it plans to add ActivityPub support in 2024; rival service Buttondown also plans ActivityPub support
Newsletter Platform Ghost Adopts ActivityPub Meera Navlakha / Mashable : Look out Substack, Ghost will join the fediverse this year Karissa Bell / Engadget : Newsletter service Ghost will support the fediverse protocol ActivityPub Threads: John O'Nolan / @johnonolan : @the_coach_life let's team up Lil K / @lilkioko : “In 2024, Ghost is adopting ActivityPub and connecting with other federated platforms across the web.” 🥳🥳 This is very exciting news‼️ Also doubles up as one of the best Fediverse explainer articles I've read. … Chris Messina / @chris : Open source @Ghost out-Substacks @substack in terms of openness and portability by adopting #ActivityPub. Welcome to the open, social web, @johnonolan! https://activitypub.ghost.org/ Anuj Ahooja / @quillmatiq : I'm so glad I chose @ghost as my publishing platform. Thank you @johnonolan and team for helping us join the largest sharing network we've ever seen in social media! Soon you'll be able to follow my posts on augment.ink on Fediverse Threads or any other platform that supports ActivityPub 🫶🏼 https://activitypub.ghost.org/ @ghost : Today we're excited to share that Ghost is going to federate over ActivityPub and become part of the largest open publishing network in the world 🌐 We hope you'll join us! 🎉 https://activitypub.ghost.org/ Tim Chambers / @timothyjchambers : “This has long been the dream, and it seems like the platforms betting on it in various ways — Mastodon, Threads, Bluesky, Flipboard, and others — are where all the energy is, while attempts to rebuild closed systems keep hitting the rocks.” Fediverse Threads https://www.theverge.com/... Justin Duke / @buttondownemail : We're very, very excited to work alongside Ghost to evolve and proselytize ActivityPub as a great tool for authors to stay connected with their audience without tethering themselves to Yet Another Algorithm or Yet Another Walled Garden: Casey Newton / @crumbler : Ghost is joining the Fediverse! Excited to see what possibilities this opens up for Platformer Mastodon: John O'Nolan / @johnonolan@mastodon.xyz : Excited to share that Ghost is going to federate over ActivityPub and become part of the largest open publishing network in the world 🎉 — https://activitypub.ghost.org Cheryl Lindo Jones / @jezlyn@mastodon.social : Ooh! What opportune timing (see my previous posts about the disadvantage of blogs, RSS and having the audience interact or provide feedback). 👍👏 — https://www.engadget.com/... #Ghost #ActivityPub #Fediverse @ellane@pkm.social : Now that Ghost will soon be federating to ActivityPub, I wish more than ever for the skills to self-host with them! — Realistically though, paying for Ghost Pro would save my sanity. — Still looking to wrap my brain around Quartz, or some other way of creating an independent blog for an affordable price. … Jonah Aragon / @jonah@mastodon.neat.computer : I'm excited about this #Ghost news. My only question is regarding this dashboard they're expanding. They say you'll be able to follow other Ghost blogs in a unified dashboard in your own Ghost blog, which is awesome. — What about people who don't have a Ghost blog themselves, but want to follow Ghost blogs in this same way? … Anuj Ahooja / @quillmatiq@mastodon.social : Some personal news: I'm now a contributor at @news! I'm so excited to work with the team over there reporting everything happening in the world of distributed social media. — For my first post, I wrote about Ghost joining the #Fediverse 🙏🏼 … Cliff / @cliffwade@allthingstech.social : This is definitely something great to see for those that use Ghost Blog or are thinking of doing so. — https://activitypub.ghost.org #Ghost #GhostBlog #ActivityPub #News #TechNews #AllThingsTech @drrjv@vmst.io : Building #ActivityPub — Ghost is federating over ActivityPub to become part of the world's largest publishing network. — “We had it pretty good for a while, back there. The early days of the web were chaotic, free, and open. — Everyone published unique content on their own domain. … Eugen Rochko / @Gargron@mastodon.social : The blogging platform #Ghost is working on adding #ActivityPub integration. That means, among other things, being able to follow Ghost-powered blogs and comment on articles right from your Mastodon account. The website they made to explain their plans is really nice! This is what momentum looks like. … X: Remkus de Vries / @remkusdevries : Love how Ghost is embracing ActivityPub fully. I think WordPress(.org) should embrace it similarly in its goal to democratize publishing. Forums: Hacker News : Ghost Is Federating over ActivityPub See also Mediagazer
Context & Ripple Effects
ActivityPub had moved from a decentralized-social protocol into a broader interoperability layer, with Threads' beta federation rollout showing large platforms testing cross-posting and federated engagement. Ghost and Buttondown’s plans extend that logic to newsletter publishing rather than treating distribution as confined to a single service.
The announcement also became a concrete product arc for Ghost: it later launched ActivityPub integration in beta for Ghost(Pro) subscribers. That follow-through matters because federation claims only reshape publishing choices once creators can use them in their existing workflows.
First-order effects
- Ghost and Buttondown commit to building ActivityPub-compatible publishing and social features, giving their users a prospective route to be followed and discussed from federated services.
- The two newsletter platforms differentiate their offerings around interoperability, while creators gain the prospect of distribution beyond each platform’s native audience.
Second-order effects
- Other newsletter services face a clearer choice between matching federated distribution features or emphasizing the reach and control of their own closed networks.
- Federated platforms can become discovery and conversation surfaces for newsletter posts, increasing the importance of how publishing tools handle identity, follows, and comments across services.
Third-order effects
- If publisher adoption continues, ActivityPub could shift from a social-network feature to shared distribution infrastructure for independent publishing, reducing the degree to which any one newsletter platform controls audience access.
- The trade-off is that product differentiation may move away from owning the social graph and toward moderation, creator tooling, and the reliability of cross-service interactions.
The trend: Newsletter platforms are beginning to treat federated identity and distribution as infrastructure rather than a feature reserved for standalone social networks.